Versions of See prior versions of a law on LawServer 2023 Washington Code 80.50.110 – Chapter governs and supersedes other law or regulations — Preemption of regulation and certification by state 2022 Washington Code 80.50.110 – Chapter governs and supersedes other law or regulations–Preemption of regulation and certification by state 2020 Washington Code 80.50.110 – Chapter governs and supersedes other law or regulations — Preemption of regulation and certification by state 2019 Washington Code 80.50.110 2018 Washington Code 80.50.110 – Chapter governs and supersedes other law or regulations — Preemption of regulation and certification by state 2016 Washington Code 80.50.110 – Chapter governs and supersedes other law or regulations–Preemption of regulation and certification by state 2015 Washington Code 80.50.110 – Chapter governs and supersedes other law or regulations–Preemption of regulation and certification by state 2014 Washington Code 80.50.110 – Chapter governs and supersedes other law or regulations — Preemption of regulation and certification by state 2013 Washington Code 80.50.110 – Chapter governs and supersedes other law or regulations — Preemption of regulation and certification by state 2009 Washington Code 80.50.110 – Chapter governs and supersedes other law or regulations — Preemption of regulation and certification by state